6. SUMMARY OF LMC DISTANCE

Table 2 summarizes
the different measurements of the LMC distance published since
January of 2002. It is customary to calculate an average final result in
a review like this one, and in order to do this I have to make some
assumptions about the error bars.
Where both random and systematic errors are given, I adopt
their (arithmetic) sum as the total error,
and I use this to weight the average.
Two of the Cepheid-based distance results have incomplete
error estimates, and for these
I adopt ±0.1 mag (see notes in 3rd column). The result from
Kerber et al. (2002)
is excluded. The weighted average of 14 measurements
is µ0 = 18.50±0.02 mag
(standard deviation = 0.04 mag).
The reduced chi-squared is less than one, which
suggests that the adopted error bars may be too conservative.

A great American sports journalist once said famously,
"The opera ain't over till the fat lady sings",
to make a point that the outcome of a series of games was not yet
determined. Regarding the convergence of published LMC distance
results, I suggest to you that the fat lady has begun to sing.

Table 2 demonstrates a remarkably high level
of consistency. The possibility that a consensus on the LMC distance
has been reached seems much more plausible now than it did when
Freedman et al. (2001)
reviewed the literature at the conclusion of the HST key project
only two years ago. See also
Walker (2003)
for a recent review of distances to Local Group galaxies.